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Author Question: A sinusoidal electromagnetic wave in vacuum delivers energy at an average rate of 5.00 W/m2. What ... (Read 46 times)

bcretired

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on: Jul 29, 2018
A sinusoidal electromagnetic wave in vacuum delivers energy at an average rate of 5.00 W/m2.
 
  What are the amplitudes of the electric and magnetic fields of this wave? (c = 3.0 x 108 m/s, 0 = 4  10-7 T  m/A, 0 = 8.85  10-12 C2/N  m2)

Question 2

A resistor and a capacitor are connected in series across an ideal battery having a constant voltage across its terminals. At the moment contact is made with the battery (a) the voltage across the capacitor is A.
 
  equal to the battery's terminal voltage. B) less than the battery's terminal voltage, but greater than zero. C) equal to the battery's terminal voltage. D) zero. (b) the voltage across the resistor is A. equal to the battery's terminal voltage. B) less than the battery's terminal voltage, but greater than zero. C) equal to the battery's terminal voltage. D) zero.


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Jayson

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Emax = 0.0614 V/m, Bmax = 0.205 nT

Answer to Question 2

(a) D (b) C


bcretired

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Reply 2 on: Jul 29, 2018
Thanks for the timely response, appreciate it

tanna.moeller

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Reply 3 on: Yesterday
Wow, this really help

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